Duve Corporation has provided the following contribution format income statement. Assume that the following information is within the relevant range.

Sales (2,000 units) $ 40,000 Variable expenses 24,000 Contribution margin 16,000 Fixed expenses 11,200 Net operating income $ 4,800

If the selling price increases by $4 per unit and the sales volume decreases by 200 units, the net operating income would be closest to:

$7,200 $12,800 $10,400 $11,520